1: (2 6 12)

(0 19 3)(1 10 4)(2 6 12)(5 18 7)(8 13 9)(11 16 14)(15 20 17)

2: (5 18 7)

(0 19 3)(1 10 4)(2 6 12)(5)(7)(8 13 9)(11 16 14)(15 20 17)(18)

3: (2 6 12)

(0 19 3)(1 10 4)(2)(5)(6)(7)(8 13 9)(11 16 14)(12)(15 20 17)(18)

4: (1 10 4)

(0 19 3)(1)(2)(4)(5)(6)(7)(8 13 9)(10)(11 16 14)(12)(15 20 17)(18)